Siemens B2100H - 100 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Siemens B2100H is a rugged 2-pole bolt-on molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. At 100A and 240V, this unit provides solid, continuous protection for everyday electrical workloads in residential, commercial, and light industrial settings.

• Secure bolt-on mounting creates a rigid, vibration-resistant bus connection, helping to minimize loose connections and noise in demanding environments.
• Thermal-magnetic trip unit combines precise thermal protection with fast magnetic response, delivering stable, repeatable protection during overloads and short circuits.
• 2-pole, 100A, 240V configuration ideal for protecting two energized conductors and ensuring simultaneous disconnection of both lines in fault conditions.
• OEM-compatible design engineered to be used with matching Siemens OEM load centers and panelboards, ensuring seamless integration with existing systems and layouts.
• Versatile application suitable for residential service panels, commercial distribution panels, and light industrial panels where reliable 2-pole protection is required.

The B2100H is purpose-built for setups where space is at a premium, yet dependable protection is non-negotiable. Its bolt-on mounting is particularly advantageous in panels that experience vibration, high-cycling environments, or where a more rigid mechanical connection helps extend service life. The combination of a 100A rating and 240V operation makes it a practical choice for main or sub-feed protection on circuits that demand robust safeguarding against overcurrent conditions.

Use cases include upgrading older panels to maintain consistent protection, adding circuits in new or expanded panels, and replacing failing devices in Siemens-compatible load centers. This breaker is most effective in applications where two conductors must be safeguarded together, preventing a line-to-line fault from leaving a single conductor energized after a fault occurs.

Why choose the Siemens B2100H over generic alternatives? It’s specifically engineered to pair with Siemens OEM panel components, delivering a cohesive electrical protection solution with predictable performance. Its thermal-magnetic trip behavior provides reliable protection curves across typical operating temperatures, so you can count on consistent response under varying load conditions.

Practical tips for installation and use:

• Verify panel compatibility with Siemens OEM load centers and panelboards before installation to ensure optimal fit and performance.
• Secure the breaker per manufacturer guidelines to maintain a solid bus connection and minimize operational resistance over time.
• Use in applications where two-pole protection is required for circuits that could otherwise leave a live conductor in fault conditions.
• Keep spare B2100H units on hand for quick replacements in service panels and distribution boards to reduce downtime.

With the Siemens B2100H, you’re choosing a purpose-built solution for reliable, long-term protection of critical electrical circuits. Its combination of secure mounting, precise thermal-magnetic protection, and OEM compatibility makes it a practical, durable choice for professionals managing residential, commercial, and light industrial electrical systems.